php pdo code to update all values in database - php

Question

sir ,
I have two textbox in my form.
My data is like...
column1 price
501 1
502 2
503 3
504 1
505 2
506 3
507 1
like wise...
I need to update all value of price column from inputed textbox value.
for Ex Inputted values in textbox like
monthtextbox = 1
pricetextbox = 50 then
update all 1 with 50 in price column.
below is my code but this is not updating any values.plz suggest me an update statement.
<?php
$errors = array();
if(isset($_POST['update']))
{
$month = $_POST['month'];
$price = $_POST['price'];
$modified = date("Y-m-d H:i:s");
$updaterow = $database->updateRow("UPDATE scheme_master SET price = :price WHERE price = :price",
array(':price'=>$price,':price'=>$month,':modified'=>$modified));
$_SESSION['message'] = "Data Updated Successfully";
}
?>
<form name="frm2" method="post" action="">
<div id="page-wrap">
<table height="50">
<tr>
<td width="8%">Enter Month :</td>
<td width="19%"><input type="text" name="month" class="" required = "" /></td>
<td width="11%">Enter Price :</td>
<td width="20%"><input type="text" name="price" class="" required = ""/></td>
<td width="12%" height="45"><input type="submit" name="update" value="Save"/></td>
</tr>
</table>
</div>
</form>

Answer 1

Change price column with month in where condition and also an array.
this will update all values and work for you.
<?php
$errors = array();
if(isset($_POST['update']))
{
$month = $_POST['month'];
$price = $_POST['price'];
$updaterow = $database->updateRow("UPDATE scheme_master SET price = :price WHERE price = :month",
array(':price'=>$price,':month'=>$month));
$_SESSION['message'] = "Data Updated Successfully";
}
?>